Question 7
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The diagram above illustrates a cathode ray tube
Identify the components X, Y and Z
Observation
Majority of the candidates did not attempts this question and less than 50% of the candidates who attempted it scored full mark. The performance was low. Interestingly, this was a repeated question, showing that prospective candidates did not revised with past question papers.
The expected answer is
X = Filament or heater
Y = Anode
Z = Plates or deflectors